HEX, RGB, HSL & CMYK Color Converter
Convert a color between HEX, RGB, HSL and CMYK with a live preview and color picker....
Developer Software
Formatters, converters and decoders for everyday development work: JSON, HTML, CSS and JavaScript formatters, Base64, URL and JWT tools, hash and UUID generators, a regex tester and a few server checks. Most of these run in your browser, so what you paste does not leave the page.
Hash Generator (MD5, SHA-256, SHA-512)
Hash any text and see MD5, SHA-1, SHA-256, SHA-384 and SHA-512 digests side by side. Runs...
UUID / GUID Generator (v4)
Generate random version 4 UUIDs, 1 to 50 at a time, with optional uppercase and no...
Regular Expression (RegEx) Tester
Test a regular expression against sample text, with flags, match highlights and capture groups. Uses the...
Unix Timestamp Converter
Convert a Unix timestamp to UTC, local time and ISO 8601, or turn a date into...
JWT (JSON Web Token) Debugger & Decoder
Decode a JWT to see its header, payload claims and expiry time. It decodes only and...
URL Encoder & Decoder
Encode text so it is safe in a URL, or decode percent-encoded text. Uses the same...
Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text, with UTF-8 handled correctly. Runs in...
JavaScript Formatter & Minifier
Indent JavaScript, run a snippet in a sandboxed frame and see console output. The minifier is...
CSS Formatter & Minifier
Format messy CSS into readable rules or minify it for a smaller file. Includes a live...
Technical notes
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